parasitical
  (a.)寄生的;食客的
  par·a·sit·i·cal /-ɪkəl/ 形容詞
  Par·a·sit·ic Par·a·sit·ic·al a.
  1. Of the nature of a parasite; having the habits of a parasite; fawning for food or favors; sycophantic. “Parasitic preachers.”
  Syn: -- leechlike, bloodsucking.
  2. Bot. & Zool. Of or pertaining to parasites; living on, or deriving nourishment from, some other living animal or plant. See Parasite, 2 & 3.
  Parasitic gull, Parasitic jager. Zool. See Jager.
  -- Par*a*sit*ic*al*ly, adv. -- Par*a*sit*ic*al*ness, n.
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  parasitical
       adj 1: relating to or caused by parasites; "parasitic infection"
              [syn: parasitic]
       2: of plants or persons; having the nature or habits of a
          parasite or leech; living off another; "a wealthy class
          parasitic upon the labor of the masses"; "parasitic vines
          that strangle the trees"; "bloodsucking blackmailer"; "his
          indolent leechlike existence" [syn: parasitic, leechlike,
           bloodsucking]